Revert of Implement common code for component and extension updaters. (patchset #3 id:40001 of https://codereview.chromium.org/1055903003/)

Reason for revert:
Performance regression: chrome-si/initializers (14.29%)

http://build.chromium.org/p/chromium/builders/Linux%20x64/builds/1504/steps/sizes/logs/stdio

# Static initializers in src/out/Release/chrome:
# HINT: To get this list, run tools/linux/dump-static-initializers.py
# HINT: diff against the log from the last run to see what changed
# atomicops_internals_x86.cc .L.str
# atomicops_internals_x86.cc _GLOBAL__sub_I_atomicops_internals_x86.cc+0x78
# atomicops_internals_x86.cc _GLOBAL__sub_I_atomicops_internals_x86.cc+0xed
# atomicops_internals_x86.cc (anonymous namespace)::google_initializer_module_atomicops_x86
# atomicops_internals_x86.cc GoogleInitializer::~GoogleInitializer()
# atomicops_internals_x86.cc __cxa_atexit@plt [registers a dtor to run at exit]
# atomicops_internals_x86.cc __init_array_end+0x3250
# atomicops_internals_x86.cc __init_array_end+0x34f0
# atomicops_internals_x86.cc __stack_chk_fail@plt
# atomicops_internals_x86.cc strcmp@plt
# atomicops_internals_x86_gcc.cc .L.str
# atomicops_internals_x86_gcc.cc _GLOBAL__sub_I_atomicops_internals_x86_gcc.cc+0x69
# atomicops_internals_x86_gcc.cc _GLOBAL__sub_I_atomicops_internals_x86_gcc.cc+0xb5
# atomicops_internals_x86_gcc.cc google::protobuf::internal::AtomicOps_Internalx86CPUFeatures
# atomicops_internals_x86_gcc.cc google::protobuf::internal::AtomicOps_Internalx86CPUFeatures+0x1
# atomicops_internals_x86_gcc.cc __stack_chk_fail@plt
# atomicops_internals_x86_gcc.cc strcmp@plt
# atomicops_internals_x86_gcc.cc .L.str
# atomicops_internals_x86_gcc.cc _GLOBAL__sub_I_atomicops_internals_x86_gcc.cc+0x62
# atomicops_internals_x86_gcc.cc _GLOBAL__sub_I_atomicops_internals_x86_gcc.cc+0x9e
# atomicops_internals_x86_gcc.cc v8::base::AtomicOps_Internalx86CPUFeatures
# atomicops_internals_x86_gcc.cc __stack_chk_fail@plt
# atomicops_internals_x86_gcc.cc strcmp@plt
# component_updater_service.cc std::ios_base::Init::Init()@plt
# component_updater_service.cc std::__ioinit [#includes <iostream>, use <ostream> instead]
# component_updater_service.cc __cxa_atexit@plt [registers a dtor to run at exit]
# component_updater_service.cc __init_array_end+0x34f0
# component_updater_service.cc __init_array_end+0x4608
# debugallocation_shim.cc module_enter_exit_hook
# debugallocation_shim.cc (anonymous namespace)::large_alloc_threshold
# debugallocation_shim.cc TCMallocGuard::TCMallocGuard()
# debugallocation_shim.cc __cxa_atexit@plt [registers a dtor to run at exit]
# debugallocation_shim.cc __init_array_end+0x34e8
# debugallocation_shim.cc __init_array_end+0x34f0
# debugallocation_shim.cc __init_array_end+0x34f8
# memory_region_map.cc libpthread_initialized
# spinlock.cc _GLOBAL__sub_I_spinlock.cc+0x12
# spinlock.cc NumCPUs()
# spinlock.cc adaptive_spin_count
# spinlock_internal.cc _GLOBAL__sub_I_spinlock_internal.cc+0x79
# spinlock_internal.cc have_futex
# spinlock_internal.cc futex_private_flag
# spinlock_internal.cc syscall@plt
# Found 43 static initializers in 8 files.

Original issue's description:
> Implement common code for component and extension updaters.
>
> The changes not under update_client are mechanical.
>
> This change creates a working UpdateClient updater client, which can be reused by both component and extension updaters.
>
> This code is not hooked up yet with any of the updaters above.
> Those changes will be committed in the near future by other CLs.
>
> R=waffles,erikwright,agl,dgarrett,jhawkins,brettw
>
> BUG=450337
>
> Committed: https://crrev.com/ba6742df55de47568e3aa438378d844a7439c391
> Cr-Commit-Position: refs/heads/master@{#325006}

TBR=agl@chromium.org,dgarrett@chromium.org,erikwright@chromium.org,waffles@chromium.org,dgarrett@google.com,jhawkins@chromium.org,brettw@chromium.org,wfh@chromium.org,sorin@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=450337

Review URL: https://codereview.chromium.org/1085643003

Cr-Commit-Position: refs/heads/master@{#325015}

1 files changed, 1 insertions, 1 deletions

diff --git a/components/component_updater/default_component_installer.h b/components/component_updater/default_component_installer.h
index f76bc83..1725798 100644
--- a/components/component_updater/default_component_installer.h
+++ b/components/component_updater/default_component_installer.h
@@ -85,7 +85,7 @@ class ComponentInstallerTraits {
 // A DefaultComponentInstaller is intended to be final, and not derived from.
 // Customization must be provided by passing a ComponentInstallerTraits object
 // to the constructor.
-class DefaultComponentInstaller : public update_client::CrxInstaller {
+class DefaultComponentInstaller : public update_client::ComponentInstaller {
  public:
   DefaultComponentInstaller(
       scoped_ptr<ComponentInstallerTraits> installer_traits);