Bug 587856 - Part 2: Report D2D surface VRAM usage through memory reporter. r=jrmuizel

gfx/thebes/gfxWindowsPlatform.cpp

@@ -107,6 +107,35 @@ public:
 }; 
 
 NS_IMPL_ISUPPORTS1(D2DCacheReporter, nsIMemoryReporter)
+
+class D2DVRAMReporter :
+    public nsIMemoryReporter
+{
+public:
+    D2DVRAMReporter()
+    { }
+
+    NS_DECL_ISUPPORTS
+
+    NS_IMETHOD GetPath(char **memoryPath) {
+        *memoryPath = strdup("gfx/d2d/surfacevram");
+        return NS_OK;
+    }
+
+    NS_IMETHOD GetDescription(char **desc) {
+        *desc = strdup("Video memory used by D2D surfaces");
+        return NS_OK;
+    }
+
+    NS_IMETHOD GetMemoryUsed(PRInt64 *memoryUsed) {
+	*memoryUsed = cairo_d2d_get_surface_vram_usage(
+	    gfxWindowsPlatform::GetPlatform()->GetD2DDevice()
+	    );
+        return NS_OK;
+    }
+};
+
+NS_IMPL_ISUPPORTS1(D2DVRAMReporter, nsIMemoryReporter)
 #endif
 
 #ifdef WINCE
@@ -189,6 +218,7 @@ gfxWindowsPlatform::gfxWindowsPlatform()
 
 #ifdef CAIRO_HAS_D2D_SURFACE
     NS_RegisterMemoryReporter(new D2DCacheReporter());
+    NS_RegisterMemoryReporter(new D2DVRAMReporter());
     mD2DDevice = NULL;
 
     if (isVistaOrHigher) {