[PPAPI] Fix the CommitLayers() will never be completed issue

content/renderer/pepper/pepper_compositor_host.cc

Index: content/renderer/pepper/pepper_compositor_host.cc
diff --git a/content/renderer/pepper/pepper_compositor_host.cc b/content/renderer/pepper/pepper_compositor_host.cc
index 47c0fccfe6cb06198183de4377c305c91e2c0e9c..289488514a60c319125b3e2faf5d0f2e263d5f5c 100644
--- a/content/renderer/pepper/pepper_compositor_host.cc
+++ b/content/renderer/pepper/pepper_compositor_host.cc
@@ -10,6 +10,7 @@
 #include "cc/layers/solid_color_layer.h"
 #include "cc/layers/texture_layer.h"
 #include "cc/resources/texture_mailbox.h"
+#include "cc/trees/layer_tree_host.h"
 #include "content/public/renderer/renderer_ppapi_host.h"
 #include "content/renderer/pepper/gfx_conversion.h"
 #include "content/renderer/pepper/host_globals.h"
@@ -366,6 +367,12 @@ int32_t PepperCompositorHost::OnHostMsgCommitLayers(
       layers_.push_back(LayerData(cc_layer, *pp_layer));
   }
 
+  // We need force to commit for each CommitLayers(), so the
+  // ViewInitiatedPaint() will be always called, even if all layers are not
+  // changed from previous CommitLayers() call.
+  if (layer_->layer_tree_host())

[bbudge, 2014/06/18 15:58:24]

The comment is hard to understand. Is this what you mean?

// We need to force a commit for each CommitLayers() call, even if no layers
// changed since the last call to CommitLayers(). This is so
ViewInitiatedPaint()
// will always be called.

[Peng, 2014/06/18 16:05:43]

Yes. Thanks you. Done

+    layer_->layer_tree_host()->SetNeedsCommit();
+
   return PP_OK_COMPLETIONPENDING;
 }