content: Remove use of GLImage from GpuMemoryBufferImpl.

content/common/gpu/client/gpu_memory_buffer_impl_shared_memory.cc

Index: content/common/gpu/client/gpu_memory_buffer_impl_shared_memory.cc
diff --git a/content/common/gpu/client/gpu_memory_buffer_impl_shared_memory.cc b/content/common/gpu/client/gpu_memory_buffer_impl_shared_memory.cc
index ade8e1ae47de63201980362bbcf47a27f45b8e28..8daff2a9b80c53572bfb969572d0e4b691ca5535 100644
--- a/content/common/gpu/client/gpu_memory_buffer_impl_shared_memory.cc
+++ b/content/common/gpu/client/gpu_memory_buffer_impl_shared_memory.cc
@@ -24,6 +24,8 @@ GpuMemoryBufferImplSharedMemory::GpuMemoryBufferImplSharedMemory(
     scoped_ptr<base::SharedMemory> shared_memory)
     : GpuMemoryBufferImpl(id, size, format, callback),
       shared_memory_(shared_memory.Pass()) {
+  DCHECK(IsFormatSupported(format));
+  DCHECK(IsSizeValidForFormat(size, format));
 }
 
 GpuMemoryBufferImplSharedMemory::~GpuMemoryBufferImplSharedMemory() {
@@ -131,6 +133,29 @@ bool GpuMemoryBufferImplSharedMemory::IsFormatSupported(Format format) {
   return false;
 }
 
+// static
+bool GpuMemoryBufferImplSharedMemory::IsSizeValidForFormat(
+    const gfx::Size& size,
+    Format format) {
+  switch (format) {
+    case ATC:
+    case ATCIA:
+    case DXT1:
+    case DXT5:
+    case ETC1:
+      // Compressed images must have a width and height that's evenly divisible
+      // by the block size.
+      return size.width() % 4 == 0 && size.height() % 4 == 0;
+    case RGBA_8888:
+    case BGRA_8888:
+    case RGBX_8888:
+      return true;
+  }
+
+  NOTREACHED();
+  return false;
+}
+
 void* GpuMemoryBufferImplSharedMemory::Map() {
   DCHECK(!mapped_);
   mapped_ = true;