diff --git a/gfx/angle/moz.build b/gfx/angle/moz.build
index c6f4ef0d2145..fe285b449d61 100644
--- a/gfx/angle/moz.build
+++ b/gfx/angle/moz.build
@@ -163,8 +163,7 @@ DEFINES['ANGLE_ENABLE_GLSL'] = "1"
 DEFINES['ANGLE_ENABLE_ESSL'] = "1"
 DEFINES['ANGLE_ENABLE_KEYEDMUTEX'] = "1"
 
-EXPORTS.angle += [ 'include/GLSLANG/ShaderLang.h', 'include/GLSLANG/ShaderVars.h', 'include/platform/Platform.h' ]
-
+EXPORTS.angle += [ 'include/GLSLANG/ShaderLang.h', 'include/GLSLANG/ShaderVars.h' ]
 EXPORTS.angle.KHR += [ 'include/KHR/khrplatform.h' ]
 
 LOCAL_INCLUDES += [ 'include', 'src', 'src/common/third_party/numerics' ]
diff --git a/gfx/gl/GLLibraryEGL.cpp b/gfx/gl/GLLibraryEGL.cpp
index 505a2fda740d..da5a8dba475a 100644
--- a/gfx/gl/GLLibraryEGL.cpp
+++ b/gfx/gl/GLLibraryEGL.cpp
@@ -4,15 +4,12 @@
 
 #include "GLLibraryEGL.h"
 
-#include "angle/Platform.h"
 #include "gfxConfig.h"
 #include "gfxCrashReporterUtils.h"
 #include "gfxUtils.h"
 #include "mozilla/Preferences.h"
 #include "mozilla/Assertions.h"
 #include "mozilla/Telemetry.h"
-#include "mozilla/Tokenizer.h"
-#include "mozilla/ScopeExit.h"
 #include "mozilla/unused.h"
 #include "nsDirectoryServiceDefs.h"
 #include "nsDirectoryServiceUtils.h"
@@ -175,43 +172,8 @@ GetAndInitDisplay(GLLibraryEGL& egl, void* displayType)
     return display;
 }
 
-class AngleErrorReporting: public angle::Platform {
-public:
-    explicit AngleErrorReporting(nsACString *aFailureId)
-        : mFailureId(aFailureId)
-    {}
-
-    void logError(const char *errorMessage) override
-    {
-        nsCString str(errorMessage);
-        Tokenizer tokenizer(str);
-
-        // Parse "ANGLE Display::initialize error " << error.getID() << ": "
-        //       << error.getMessage()
-        nsCString currWord;
-        Tokenizer::Token intToken;
-        if (tokenizer.CheckWord("ANGLE") &&
-            tokenizer.CheckWhite() &&
-            tokenizer.CheckWord("Display") &&
-            tokenizer.CheckChar(':') &&
-            tokenizer.CheckChar(':') &&
-            tokenizer.CheckWord("initialize") &&
-            tokenizer.CheckWhite() &&
-            tokenizer.CheckWord("error") &&
-            tokenizer.CheckWhite() &&
-            tokenizer.Check(Tokenizer::TOKEN_INTEGER, intToken)) {
-            *mFailureId = "FAILURE_ID_ANGLE_ID_";
-            mFailureId->AppendPrintf("%i", intToken.AsInteger());
-        } else {
-            *mFailureId = "FAILURE_ID_ANGLE_UNKNOWN";
-        }
-    }
-private:
-    nsACString* mFailureId;
-};
-
 static EGLDisplay
-GetAndInitDisplayForAccelANGLE(GLLibraryEGL& egl, nsACString* const out_failureId)
+GetAndInitDisplayForAccelANGLE(GLLibraryEGL& egl)
 {
     EGLDisplay ret = 0;
 
@@ -224,16 +186,8 @@ GetAndInitDisplayForAccelANGLE(GLLibraryEGL& egl, nsACString* const out_failureI
     if (gfxPrefs::WebGLANGLEForceD3D11())
         d3d11ANGLE.UserForceEnable("User force-enabled D3D11 ANGLE on disabled hardware");
 
-    AngleErrorReporting errorReporter(out_failureId);
-
-    egl.fANGLEPlatformInitialize(&errorReporter);
-    auto guardShutdown = mozilla::MakeScopeExit([&] {
-        egl.fANGLEPlatformShutdown();
-    });
-
-    if (gfxConfig::IsForcedOnByUser(Feature::D3D11_HW_ANGLE)) {
+    if (gfxConfig::IsForcedOnByUser(Feature::D3D11_HW_ANGLE))
         return GetAndInitDisplay(egl, LOCAL_EGL_D3D11_ONLY_DISPLAY_ANGLE);
-    }
 
     if (d3d11ANGLE.IsEnabled()) {
         ret = GetAndInitDisplay(egl, LOCAL_EGL_D3D11_ELSE_D3D9_DISPLAY_ANGLE);
@@ -418,9 +372,7 @@ GLLibraryEGL::EnsureInitialized(bool forceAccel, nsACString* const out_failureId
     // Client exts are ready. (But not display exts!)
     if (IsExtensionSupported(ANGLE_platform_angle_d3d)) {
         GLLibraryLoader::SymLoadStruct d3dSymbols[] = {
-            { (PRFuncPtr*)&mSymbols.fANGLEPlatformInitialize, { "ANGLEPlatformInitialize", nullptr } },
-            { (PRFuncPtr*)&mSymbols.fANGLEPlatformShutdown,   { "ANGLEPlatformShutdown", nullptr } },
-            { (PRFuncPtr*)&mSymbols.fGetPlatformDisplayEXT,   { "eglGetPlatformDisplayEXT", nullptr } },
+            { (PRFuncPtr*)&mSymbols.fGetPlatformDisplayEXT, { "eglGetPlatformDisplayEXT", nullptr } },
             { nullptr, { nullptr } }
         };
 
@@ -472,7 +424,7 @@ GLLibraryEGL::EnsureInitialized(bool forceAccel, nsACString* const out_failureId
             }
 
             // Hardware accelerated ANGLE path
-            chosenDisplay = GetAndInitDisplayForAccelANGLE(*this, out_failureId);
+            chosenDisplay = GetAndInitDisplayForAccelANGLE(*this);
         }
     } else {
         chosenDisplay = GetAndInitDisplay(*this, EGL_DEFAULT_DISPLAY);
diff --git a/gfx/gl/GLLibraryEGL.h b/gfx/gl/GLLibraryEGL.h
index fa6ea748b6fe..f44eaae4c99a 100644
--- a/gfx/gl/GLLibraryEGL.h
+++ b/gfx/gl/GLLibraryEGL.h
@@ -52,10 +52,6 @@
 #define EGL_DEFAULT_DISPLAY  ((EGLNativeDisplayType)0)
 #endif
 
-namespace angle {
-class Platform;
-}
-
 namespace mozilla {
 
 namespace gfx {
@@ -120,8 +116,6 @@ public:
     }
 
     void ClearSymbols() {
-        mSymbols.fANGLEPlatformInitialize = nullptr;
-        mSymbols.fANGLEPlatformShutdown = nullptr;
         mSymbols.fGetDisplay = nullptr;
         mSymbols.fGetPlatformDisplayEXT = nullptr;
         mSymbols.fTerminate = nullptr;
@@ -504,22 +498,6 @@ public:
         return ret;
     }
 
-    void fANGLEPlatformInitialize(angle::Platform* platform)
-    {
-        MOZ_ASSERT(mSymbols.fANGLEPlatformInitialize);
-        BEFORE_GL_CALL;
-        mSymbols.fANGLEPlatformInitialize(platform);
-        AFTER_GL_CALL;
-    }
-
-    void fANGLEPlatformShutdown()
-    {
-        MOZ_ASSERT(mSymbols.fANGLEPlatformShutdown);
-        BEFORE_GL_CALL;
-        mSymbols.fANGLEPlatformShutdown();
-        AFTER_GL_CALL;
-    }
-
     EGLDisplay Display() {
         MOZ_ASSERT(mInitialized);
         return mEGLDisplay;
@@ -644,11 +622,6 @@ public:
         pfnGetSyncAttrib fGetSyncAttrib;
         typedef EGLint (GLAPIENTRY * pfnDupNativeFenceFDANDROID)(EGLDisplay dpy, EGLSync sync);
         pfnDupNativeFenceFDANDROID fDupNativeFenceFDANDROID;
-
-        typedef void (GLAPIENTRY * pfnANGLEPlatformInitialize)(angle::Platform* platform);
-        pfnANGLEPlatformInitialize fANGLEPlatformInitialize;
-        typedef void (GLAPIENTRY * pfnANGLEPlatformShutdown)();
-        pfnANGLEPlatformShutdown fANGLEPlatformShutdown;
     } mSymbols;
 
 #ifdef DEBUG