Bug 1151102 - Add some diagnostic logging. r=snorp

--HG--
extra : commitid : HGgmg6anUOh

layout/base/nsPresShell.cpp

@@ -6042,6 +6042,9 @@ PresShell::Paint(nsView*        aViewToPaint,
   // we only want to do that when we have real content to paint.
   // See Bug 798245
   if (mIsFirstPaint && !mPaintingSuppressed) {
+#ifdef MOZ_WIDGET_ANDROID
+    __android_log_print(ANDROID_LOG_INFO, "GeckoBug1151102", "PresShell doing a first-paint");
+#endif
     layerManager->SetIsFirstPaint();
     mIsFirstPaint = false;
   }

mobile/android/base/gfx/GeckoLayerClient.java

@@ -606,6 +606,7 @@ class GeckoLayerClient implements LayerView.Listener, PanZoomTarget
 
             // Indicate that the document is about to be composited so the
             // LayerView background can be removed.
+            Log.i("GeckoBug1151102", "Done first paint; state " + mView.getPaintState());
             if (mView.getPaintState() == LayerView.PAINT_START) {
                 mView.setPaintState(LayerView.PAINT_BEFORE_FIRST);
             }

mobile/android/base/gfx/LayerRenderer.java

@@ -637,6 +637,7 @@ public class LayerRenderer implements Tabs.OnTabsChangedListener {
                     @Override
                     public void run() {
                         mView.setSurfaceBackgroundColor(Color.TRANSPARENT);
+                        Log.i("GeckoBug1151102", "Cleared bg color");
                     }
                 });
                 mView.setPaintState(LayerView.PAINT_AFTER_FIRST);
@@ -653,6 +654,7 @@ public class LayerRenderer implements Tabs.OnTabsChangedListener {
         // thread, so this may need to be changed if any problems appear.
         if (msg == Tabs.TabEvents.SELECTED) {
             if (mView != null) {
+                Log.i("GeckoBug1151102", "Tab switch; entering PAINT_START");
                 mView.setSurfaceBackgroundColor(tab.getBackgroundColor());
                 mView.setPaintState(LayerView.PAINT_START);
             }

mobile/android/base/gfx/LayerView.java

@@ -293,6 +293,7 @@ public class LayerView extends ScrollView implements Tabs.OnTabsChangedListener
 
             mSurfaceView = new LayerSurfaceView(getContext(), this);
             mSurfaceView.setBackgroundColor(Color.WHITE);
+            Log.i("GeckoBug1151102", "Initialized surfaceview");
 
             // The "filler" view sits behind the URL bar and should never be
             // visible. It exists solely to make this LayerView actually

mobile/android/chrome/content/browser.js

@@ -1034,6 +1034,7 @@ var BrowserApp = {
   },
 
   contentDocumentChanged: function() {
+    dump("GeckoBug1151102: Setting first-paint flag on DWU");
     window.top.QueryInterface(Ci.nsIInterfaceRequestor).getInterface(Ci.nsIDOMWindowUtils).isFirstPaint = true;
     Services.androidBridge.contentDocumentChanged();
   },

widget/android/AndroidBridge.cpp

@@ -682,6 +682,7 @@ AndroidBridge::SetLayerClient(GeckoLayerClient::Param jobj)
     // We therefore need to link up the new java objects to Gecko, and that's what
     // we do here.
     bool resetting = (mLayerClient != nullptr);
+    __android_log_print(ANDROID_LOG_INFO, "GeckoBug1151102", "Reseting layer client: %d", resetting);
 
     mLayerClient = jobj;