[inspector] remove profiler->collectSample from V8StackTraceImpl::capture

Now we don't need to call collectSample on each V8StackTraceImpl::capture during collecting profile.

CQ_INCLUDE_TRYBOTS=master.tryserver.blink:linux_precise_blink_rel
BUG=none
R=alph@chromium.org,dgozman@chromium.org

Review-Url: https://codereview.chromium.org/2510823002
Cr-Commit-Position: refs/heads/master@{#41051}

src/inspector/v8-profiler-agent-impl.cc

@@ -309,8 +309,4 @@ bool V8ProfilerAgentImpl::idleFinished() {
   return m_profiler;
 }
 
-void V8ProfilerAgentImpl::collectSample() {
-  if (m_profiler) m_profiler->CollectSample();
-}
-
 }  // namespace v8_inspector

src/inspector/v8-profiler-agent-impl.h

@@ -43,8 +43,6 @@ class V8ProfilerAgentImpl : public protocol::Profiler::Backend {
   bool idleStarted();
   bool idleFinished();
 
-  void collectSample();
-
  private:
   String16 nextProfileId();
 

src/inspector/v8-stack-trace-impl.cc

@@ -7,10 +7,8 @@
 #include "src/inspector/string-util.h"
 #include "src/inspector/v8-debugger.h"
 #include "src/inspector/v8-inspector-impl.h"
-#include "src/inspector/v8-profiler-agent-impl.h"
 
 #include "include/v8-debug.h"
-#include "include/v8-profiler.h"
 #include "include/v8-version.h"
 
 namespace v8_inspector {
@@ -161,12 +159,6 @@ std::unique_ptr<V8StackTraceImpl> V8StackTraceImpl::capture(
   v8::HandleScope handleScope(isolate);
   v8::Local<v8::StackTrace> stackTrace;
   if (isolate->InContext()) {
-    if (debugger) {
-      V8InspectorImpl* inspector = debugger->inspector();
-      V8ProfilerAgentImpl* profilerAgent =
-          inspector->enabledProfilerAgentForGroup(contextGroupId);
-      if (profilerAgent) profilerAgent->collectSample();
-    }
     stackTrace = v8::StackTrace::CurrentStackTrace(
         isolate, static_cast<int>(maxStackSize), stackTraceOptions);
   }