base: Change auto to not deduce raw pointers.

This patch updates the code to prevent auto deducing to a raw pointer.

R=danakj@chromium.org
BUG=554600

Review-Url: https://codereview.chromium.org/2173523002
Cr-Commit-Position: refs/heads/master@{#406961}

base/files/file_path_unittest.cc

@@ -1306,7 +1306,7 @@ TEST_F(FilePathTest, GetHFSDecomposedFormWithInvalidInput) {
     FPL("\xf0\x28\x8c\xbc"),
     FPL("\xf0\x28\x8c\x28"),
   };
-  for (const auto& invalid_input : cases) {
+  for (auto* invalid_input : cases) {
     FilePath::StringType observed = FilePath::GetHFSDecomposedForm(
         invalid_input);
     EXPECT_TRUE(observed.empty());

base/trace_event/java_heap_dump_provider_android_unittest.cc

@@ -11,7 +11,7 @@ namespace base {
 namespace trace_event {
 
 TEST(JavaHeapDumpProviderTest, JavaHeapDump) {
-  auto jhdp = JavaHeapDumpProvider::GetInstance();
+  auto* jhdp = JavaHeapDumpProvider::GetInstance();
   MemoryDumpArgs dump_args = {MemoryDumpLevelOfDetail::DETAILED};
   std::unique_ptr<ProcessMemoryDump> pmd(
       new ProcessMemoryDump(nullptr, dump_args));

base/win/scoped_handle_test_dll.cc

@@ -66,7 +66,7 @@ bool InternalRunThreadTest() {
   ::CloseHandle(ready_event);
 
   if (threads_.size() != kNumThreads) {
-    for (const auto& thread : threads_)
+    for (auto* thread : threads_)
       ::CloseHandle(thread);
     ::CloseHandle(start_event);
     return false;
@@ -74,7 +74,7 @@ bool InternalRunThreadTest() {
 
   ::SetEvent(start_event);
   ::CloseHandle(start_event);
-  for (const auto& thread : threads_) {
+  for (auto* thread : threads_) {
     ::WaitForSingleObject(thread, INFINITE);
     ::CloseHandle(thread);
   }