Add compile time checks against longs being used in IPC structs on 32 bit Android.

content/common/cc_messages.cc

Index: content/common/cc_messages.cc
diff --git a/content/common/cc_messages.cc b/content/common/cc_messages.cc
index 70729469c7c54d2eb5f312ac6dd568c8803c9e69..4a937d2c64aba1db14b0c813c33bd6c88262d061 100644
--- a/content/common/cc_messages.cc
+++ b/content/common/cc_messages.cc
@@ -186,7 +186,7 @@ void ParamTraits<cc::FilterOperation>::Log(
 
 void ParamTraits<cc::FilterOperations>::Write(
     Message* m, const param_type& p) {
-  WriteParam(m, p.size());
+  WriteParam(m, static_cast<uint32_t>(p.size()));
   for (std::size_t i = 0; i < p.size(); ++i) {
     WriteParam(m, p.at(i));
   }
@@ -195,7 +195,7 @@ void ParamTraits<cc::FilterOperations>::Write(
 bool ParamTraits<cc::FilterOperations>::Read(const Message* m,
                                              base::PickleIterator* iter,
                                              param_type* r) {
-  size_t count;
+  uint32_t count;
   if (!ReadParam(m, iter, &count))
     return false;
 
@@ -303,7 +303,7 @@ void ParamTraits<cc::RenderPass>::Write(
   WriteParam(m, p.damage_rect);
   WriteParam(m, p.transform_to_root_target);
   WriteParam(m, p.has_transparent_background);
-  WriteParam(m, p.quad_list.size());
+  WriteParam(m, static_cast<uint32_t>(p.quad_list.size()));
 
   cc::SharedQuadStateList::ConstIterator shared_quad_state_iter =
       p.shared_quad_state_list.begin();
@@ -407,7 +407,7 @@ bool ParamTraits<cc::RenderPass>::Read(const Message* m,
   gfx::Rect damage_rect;
   gfx::Transform transform_to_root_target;
   bool has_transparent_background;
-  size_t quad_list_size;
+  uint32_t quad_list_size;
 
   if (!ReadParam(m, iter, &id) || !ReadParam(m, iter, &output_rect) ||
       !ReadParam(m, iter, &damage_rect) ||
@@ -422,7 +422,7 @@ bool ParamTraits<cc::RenderPass>::Read(const Message* m,
             transform_to_root_target,
             has_transparent_background);
 
-  for (size_t i = 0; i < quad_list_size; ++i) {
+  for (uint32_t i = 0; i < quad_list_size; ++i) {
     cc::DrawQuad::Material material;
     base::PickleIterator temp_iter = *iter;
     if (!ReadParam(m, &temp_iter, &material))
@@ -681,10 +681,10 @@ void ParamTraits<cc::DelegatedFrameData>::Write(Message* m,
 
   WriteParam(m, p.device_scale_factor);
   WriteParam(m, p.resource_list);
-  WriteParam(m, p.render_pass_list.size());
+  WriteParam(m, static_cast<uint32_t>(p.render_pass_list.size()));
   for (const auto& pass : p.render_pass_list) {
-    WriteParam(m, pass->quad_list.size());
-    WriteParam(m, pass->shared_quad_state_list.size());
+    WriteParam(m, static_cast<uint32_t>(pass->quad_list.size()));
+    WriteParam(m, static_cast<uint32_t>(pass->shared_quad_state_list.size()));
     WriteParam(m, *pass);
   }
 }
@@ -701,21 +701,23 @@ bool ParamTraits<cc::DelegatedFrameData>::Read(const Message* m,
 
   std::set<cc::RenderPassId> pass_set;
 
-  size_t num_render_passes;
+  uint32_t num_render_passes;
   if (!ReadParam(m, iter, &p->resource_list) ||
       !ReadParam(m, iter, &num_render_passes) ||
       num_render_passes > kMaxRenderPasses || num_render_passes == 0)
     return false;
-  for (size_t i = 0; i < num_render_passes; ++i) {
-    size_t quad_list_size;
-    size_t shared_quad_state_list_size;
+  for (uint32_t i = 0; i < num_render_passes; ++i) {
+    uint32_t quad_list_size;
+    uint32_t shared_quad_state_list_size;
     if (!ReadParam(m, iter, &quad_list_size) ||
         !ReadParam(m, iter, &shared_quad_state_list_size) ||
         quad_list_size > kMaxQuadListSize ||
         shared_quad_state_list_size > kMaxSharedQuadStateListSize)
       return false;
     scoped_ptr<cc::RenderPass> render_pass =
-        cc::RenderPass::Create(shared_quad_state_list_size, quad_list_size);
+        cc::RenderPass::Create(
+            static_cast<size_t>(shared_quad_state_list_size),
+            static_cast<size_t>(quad_list_size));
     if (!ReadParam(m, iter, render_pass.get()))
       return false;
     // Validate that each RenderPassDrawQuad points at a valid RenderPass